ASTM D4135-82(2012) PDF

1.1 This practice covers the procedures for obtaining quantitative samples of a phytoplankton community by use of depth-integrating sampler. The method is suitable for use in flowing waters.Fig. 3

1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.